1. "Because" as a Conjunction:
* Comma before "because": Use a comma before "because" when it introduces a dependent clause that follows an independent clause. Think of it as separating two complete thoughts.
* Example: *I went to the store, because I needed milk.*
* No comma before "because": When "because" introduces a dependent clause that comes *before* an independent clause, no comma is needed.
* Example: *Because I needed milk, I went to the store.*
2. "Because" as a Preposition:
* No comma before "because": When "because" acts as a preposition, it introduces a prepositional phrase, not a clause. Prepositional phrases don't require commas.
* Example: *He was late because of the traffic.* ("Because of" is a prepositional phrase.)
Key Tip: To determine if you need a comma, consider whether "because" introduces a clause (containing a subject and verb) or a prepositional phrase.
Additional Notes:
* Clarity: Even if the grammar allows for omitting the comma, using one can sometimes improve clarity, especially in long sentences.
* Style: Some writers prefer to use commas more frequently than others, even if they aren't strictly required.
Let me know if you'd like to see more examples!